The late fall/winter has given some awesome days swinging streamers for trout. I just started to use the new OPST Commando heads with their sink tips as well as the Laser line. Matched to some 4 wt switch rods, its the most fun I think I have ever had casting! 

Some fish have taken the fly on a very slow swing while others required a little strip retrieve + subtle jigging motions to the streamer as it swung. One of the positives of the new OPST lines is the compact size of them. It really opens up a lot more water that wasn't cartable to before.